Spain’s Quaternium is claiming a new world record for the endurance of a multi-rotor unmanned aircraft system (UAS). The four-hour, 40-minute drone flight took place in Valencia, Spain, on Dec. 24th using its HYBRiX.20 fuel-electric quadcopter for the record flight. The HYBRiX.20 was designed by Quaternium in 2014, and its first model was built in 2015. […]